# Uncategorized

**URL:** https://discourse.kitware.com/c/uncategorized/1.md

[Latest](https://discourse.kitware.com/latest.md) · [Categories](https://discourse.kitware.com/categories.md)

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## [Welcome to Discourse](https://discourse.kitware.com/t/welcome-to-discourse/8)

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**Author:** [@system](https://discourse.kitware.com/u/system)\
**Replies:** 0\
**Last updated:** [July 28, 2017, 8:59pm UTC](https://discourse.kitware.com/t/welcome-to-discourse/8 "2017-07-28T20:59:57Z")

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Welcome to the Kitware forums. This is a place for users to ask questions and for developers to discuss projects hosted at Kitware. The first paragraph of this pinned topic will be visible as a welcome message to all ne…

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## [gitlab.kitware.com SSL cert expired](https://discourse.kitware.com/t/gitlab-kitware-com-ssl-cert-expired/1651)

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**Author:** [@scivision](https://discourse.kitware.com/u/scivision)\
**Replies:** 0\
**Last updated:** [November 25, 2025, 4:28am UTC](https://discourse.kitware.com/t/gitlab-kitware-com-ssl-cert-expired/1651 "2025-11-25T04:28:41Z")

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When trying to access https://gitlab.kitware.com with browser or curl from multiple computers / OS at different physical locations, I get errors like curl https://gitlab.kitware.com curl: (60) SSL certificate problem: …

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## [Access to Main.cxx from custom Slicer Python application](https://discourse.kitware.com/t/access-to-main-cxx-from-custom-slicer-python-application/1524)

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**Author:** [@ejm-revvity](https://discourse.kitware.com/u/ejm-revvity)\
**Replies:** 1\
**Last updated:** [June 26, 2025, 9:26pm UTC](https://discourse.kitware.com/t/access-to-main-cxx-from-custom-slicer-python-application/1524 "2025-06-26T21:26:03Z")

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We have a custom Slicer Python application that starts in Main.cxx and utilizes a main window specified in xxxAppMainWindow.cxx (both files originally developed by Julien Finet, Kitware, Inc.) I want to modify/add to thi…

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## [vtkPExodusIIReader gives no outputs](https://discourse.kitware.com/t/vtkpexodusiireader-gives-no-outputs/1470)

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**Author:** [@mattfalcone](https://discourse.kitware.com/u/mattfalcone)\
**Replies:** 0\
**Last updated:** [March 5, 2025, 2:36pm UTC](https://discourse.kitware.com/t/vtkpexodusiireader-gives-no-outputs/1470 "2025-03-05T14:36:10Z")

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I am trying to read the can.e.4.\* Parallel Exodus II files in the VTKData tar ball using the the vtkPExodusIIReader. It seems that the reader recognises which files needs to be read and returns without error. However, th…

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## [Unexpected Rendering Artifacts in VTK When Using Volume Rendering](https://discourse.kitware.com/t/unexpected-rendering-artifacts-in-vtk-when-using-volume-rendering/1468)

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**Author:** [@jalac](https://discourse.kitware.com/u/jalac)\
**Replies:** 0\
**Last updated:** [February 28, 2025, 6:29pm UTC](https://discourse.kitware.com/t/unexpected-rendering-artifacts-in-vtk-when-using-volume-rendering/1468 "2025-02-28T18:29:18Z")

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Hello I’m working with VTK for volume rendering but encountering unexpected artifacts when visualizing medical imaging data. Specifically, I notice strange flickering or ghosting effects when rotating the volume, even w…

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## [Choosing the Correct Kitware Tool for a Medical Image Analysis Project: Advice Needed](https://discourse.kitware.com/t/choosing-the-correct-kitware-tool-for-a-medical-image-analysis-project-advice-needed/1344)

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**Author:** [@Andro](https://discourse.kitware.com/u/Andro)\
**Replies:** 0\
**Last updated:** [August 26, 2024, 7:00am UTC](https://discourse.kitware.com/t/choosing-the-correct-kitware-tool-for-a-medical-image-analysis-project-advice-needed/1344 "2024-08-26T07:00:27Z")

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Hello Everyone :hugs:, As I work on a medical image analysis project, I would like some advice on which Kitware’s technologies would be best to use. I am working on a project that will segment and analyse 3D medical pic…

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## [CSG GoldFeather using VTK](https://discourse.kitware.com/t/csg-goldfeather-using-vtk/1327)

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**Author:** [@Coskun](https://discourse.kitware.com/u/Coskun)\
**Replies:** 0\
**Last updated:** [July 17, 2024, 10:17am UTC](https://discourse.kitware.com/t/csg-goldfeather-using-vtk/1327 "2024-07-17T10:17:52Z")

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Hi, I am trying to implement the CSG Goldfeather algorithm using VTK. I am following the example from glt/src/csg/goldlay2.cpp at master · nigels-com/glt · GitHub 1. I succeeded in implementing the algorithm using python…

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## [(moved to VTK discourse) Fix VTK forcibly aborting application instead of throwing error](https://discourse.kitware.com/t/moved-to-vtk-discourse-fix-vtk-forcibly-aborting-application-instead-of-throwing-error/1284)

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**Author:** [@2xB](https://discourse.kitware.com/u/2xB)\
**Replies:** 2\
**Last updated:** [May 6, 2024, 3:53pm UTC](https://discourse.kitware.com/t/moved-to-vtk-discourse-fix-vtk-forcibly-aborting-application-instead-of-throwing-error/1284 "2024-05-06T15:53:34Z")

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VTK currently forcibly aborts an application if no screen is available. Having a library like VTK call std::abort is significantly worse than having it throw errors since for std::abort, it is not possible to catch the e…

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## [An error occurred while using the liver.msh model](https://discourse.kitware.com/t/an-error-occurred-while-using-the-liver-msh-model/1180)

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**Author:** [@Jiahua](https://discourse.kitware.com/u/Jiahua)\
**Replies:** 2\
**Last updated:** [January 13, 2024, 6:47am UTC](https://discourse.kitware.com/t/an-error-occurred-while-using-the-liver-msh-model/1180 "2024-01-13T06:47:07Z")

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When replacing the model in the Example-PbdTissue\* example (such as Example-PbdTissueGrasping) with the liver.msh model, an error was reported, but it can be compiled normally with other models provided in the project, …

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## [gltf2usd](https://discourse.kitware.com/t/gltf2usd/1187)

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**Author:** [@Islam\_Ibrahim](https://discourse.kitware.com/u/Islam_Ibrahim)\
**Replies:** 0\
**Last updated:** [January 10, 2024, 12:04am UTC](https://discourse.kitware.com/t/gltf2usd/1187 "2024-01-10T00:04:33Z")

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Hi let us introduce our extension to for Code credits gltf2usd by kcoley, We made it work in 3d slicer. and export the Model to omniverse \[GitHub - MustafaJafar/3d-slicer-draft-usd-support: The code here is a rough p…

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## [Missing dlls after building vtk 7.1.1. on Windows using cmake and Visual Studio 15 (2017)](https://discourse.kitware.com/t/missing-dlls-after-building-vtk-7-1-1-on-windows-using-cmake-and-visual-studio-15-2017/1162)

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**Author:** [@reydv](https://discourse.kitware.com/u/reydv)\
**Replies:** 0\
**Last updated:** [November 25, 2023, 4:49am UTC](https://discourse.kitware.com/t/missing-dlls-after-building-vtk-7-1-1-on-windows-using-cmake-and-visual-studio-15-2017/1162 "2023-11-25T04:49:41Z")

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I am building VTK 7.1.1 on a Windows machine using cmake and Visual Studio 15 (2017) for use in a java project. The java version I am suing is jdk\_12.0.2. I follow this procedure: https://gitlab.kitware.com/vtk/vtk/-/bl…

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## [ECMO loop not removing CO2 properly](https://discourse.kitware.com/t/ecmo-loop-not-removing-co2-properly/1104)

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**Author:** [@rene\_64](https://discourse.kitware.com/u/rene_64)\
**Replies:** 0\
**Last updated:** [September 13, 2023, 6:02pm UTC](https://discourse.kitware.com/t/ecmo-loop-not-removing-co2-properly/1104 "2023-09-13T18:02:28Z")

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I have a script that sets up an ECMO loop and is supposed to remove CO2 from the blood that passes through the ECMO circuit. However I noticed that the aorta’s pCO2 does not change based on the rate of CO2 removal from t…

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## [Provide Your Thoughts on Kitware’s Training Courses](https://discourse.kitware.com/t/provide-your-thoughts-on-kitware-s-training-courses/1015)

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**Author:** [@dcthomp](https://discourse.kitware.com/u/dcthomp)\
**Replies:** 0\
**Last updated:** [April 4, 2023, 4:31pm UTC](https://discourse.kitware.com/t/provide-your-thoughts-on-kitware-s-training-courses/1015 "2023-04-04T16:31:12Z")

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Kitware is looking for input about our paid public training courses. Our goal is to offer the highest quality, most relevant training material to help users and developers become experts with our popular open source soft…

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## [Creating custom GUI which uses Paraview and CMB](https://discourse.kitware.com/t/creating-custom-gui-which-uses-paraview-and-cmb/1007)

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**Author:** [@Muhammad\_Saad\_Atique](https://discourse.kitware.com/u/Muhammad_Saad_Atique)\
**Replies:** 0\
**Last updated:** [March 20, 2023, 5:29pm UTC](https://discourse.kitware.com/t/creating-custom-gui-which-uses-paraview-and-cmb/1007 "2023-03-20T17:29:01Z")

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Hi, I want to create a GUI/desktop application that takes in .vtk or .stl files and display it to user. And allow user to select regions on the body, apply forces to it, apply boundary conditions and do meshing. Can som…

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## [Changing int\* to const vtkIdType\* in vtkCell? (breaks VTK API)](https://discourse.kitware.com/t/changing-int-to-const-vtkidtype-in-vtkcell-breaks-vtk-api/364)

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**Author:** [@Yohann\_Bearzi](https://discourse.kitware.com/u/Yohann_Bearzi)\
**Replies:** 1\
**Last updated:** [December 17, 2019, 11:18pm UTC](https://discourse.kitware.com/t/changing-int-to-const-vtkidtype-in-vtkcell-breaks-vtk-api/364 "2019-12-17T23:18:42Z")

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Hi, I am posting to ask if anyone is against changing vtkCell3D API local ids representation. Currently they are stored as int\*, which forces the user to make copies of the ids in a vtkIdType\* if one wants to use an alg…

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## [Breast Density Calculation](https://discourse.kitware.com/t/breast-density-calculation/311)

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**Author:** [@ewurama](https://discourse.kitware.com/u/ewurama)\
**Replies:** 1\
**Last updated:** [September 10, 2019, 3:56pm UTC](https://discourse.kitware.com/t/breast-density-calculation/311 "2019-09-10T15:56:20Z")

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Hello, I’m currently reasearching into possible correlations between breast density of breast cancer patients and the kinds of toxicities they experience after treatment. Could someone suggest a software or libraries t…

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## [Math test](https://discourse.kitware.com/t/math-test/297)

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**Author:** [@dcthomp](https://discourse.kitware.com/u/dcthomp)\
**Replies:** 1\
**Last updated:** [August 6, 2019, 2:52pm UTC](https://discourse.kitware.com/t/math-test/297 "2019-08-06T14:52:01Z")

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The 5 greatest numbers: 1 + e^{i\\pi} = 0. Hmmm… Things don’t seem to be working here, but they do on the ParaView discourse site

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## [Solved: Problem with Covalic scoring](https://discourse.kitware.com/t/solved-problem-with-covalic-scoring/235)

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**Author:** [@Steffen\_Schuler](https://discourse.kitware.com/u/Steffen_Schuler)\
**Replies:** 0\
**Last updated:** [March 11, 2019, 10:00am UTC](https://discourse.kitware.com/t/solved-problem-with-covalic-scoring/235 "2019-03-11T10:00:34Z")

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The problem has already been resolved - thank you! Hello, I am using the Covalic platform for a community challenge: https://challenge.kitware.com/#challenge/5b44770756357d05219fa8e3 Since last week, the server some…

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## [Choosing the EGL device index in pvpython](https://discourse.kitware.com/t/choosing-the-egl-device-index-in-pvpython/214)

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**Author:** [@knolla](https://discourse.kitware.com/u/knolla)\
**Replies:** 0\
**Last updated:** [January 10, 2019, 10:33pm UTC](https://discourse.kitware.com/t/choosing-the-egl-device-index-in-pvpython/214 "2019-01-10T22:33:57Z")

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Is there an equivalent to the command line argument --egl-device-index in pvpython, similarly to what exists in pvserver and paraview executables? Or, a good way to set it in the python script itself? Thanks!

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## [Help with starting a girder, server-side plugin](https://discourse.kitware.com/t/help-with-starting-a-girder-server-side-plugin/132)

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**Author:** [@zed](https://discourse.kitware.com/u/zed)\
**Replies:** 0\
**Last updated:** [July 25, 2018, 11:02am UTC](https://discourse.kitware.com/t/help-with-starting-a-girder-server-side-plugin/132 "2018-07-25T11:02:38Z")

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we’ve been successfully starting to use girder as a data management platform using the web and python client library. it works fantastically smooth and gets out of the way. Now I’d like to go into extending the platform …

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## [Test](https://discourse.kitware.com/t/test/23)

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**Author:** [@Bryan\_Garrant](https://discourse.kitware.com/u/Bryan_Garrant)\
**Replies:** 5\
**Last updated:** [April 23, 2018, 7:19pm UTC](https://discourse.kitware.com/t/test/23 "2018-04-23T19:19:08Z")

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Just testing a conversation